September 3, 2009 8:02 pm Diane Warren Finds “Strength” In Whitney Houston Singer/songwriter Diane Warren talks about how she wrote “I Didn’t Know My Own Strength” for Whitney Houston and how Whitney reacted to the song. US & World Videos 1:37 Pro-Palestinian protesters gather outside White House correspondents' dinner 2:05 How ‘Love Is Blind' made Vanessa Lachey and Nick Lachey's marriage stronger 2:03 Does Shakira still believe in love following Gerard Piqué split? 1:36 O.J. Simpson's cause of death revealed 25:57 WATCH: ‘Changing Climate' highlights the Philly-area residents who are combatting climate change